A m In this lesson you will: Revise the topics learnt in the previous level. Lesson1 Revision of Level I Moz walks in and sees that Jyoti is wiping the monitor with a soft duster while Tejas is wiping the CPU. Moz: Hello children. Let me help you in keeping the computers clean. I will also check the connections. Meanwhile, you write about the parts of a computer. I have kept some sheets on the desk. Revision of Uses of a Computer Computer can be used for many simple tasks like: Drawing pictures Adding numbers Writing letters Watching movies and cartoons Playing games Listening to music Revision of Parts of a Computer Tejas writes about the CPU and mouse. Jyoti writes about the monitor and keyboard. CPU CPU (central processing unit) is the most important part of a computer. It does all the tasks that we want the computer to do. 2
It controls all the other parts, like Monitor, Keyboard and Mouse. All parts have to be connected to the CPU, for them to work. Monitor A monitor looks like a TV screen. The CPU uses the monitor to show us photos, movies, games, and other activities. The mouse pointer can be seen on the monitor. Often, whatever we type using the keyboard, can be seen on the monitor. Keyboard Keyboard is used to write with the computer. We can also use a keyboard to give instructions to the computer. The buttons on the keyboard are called keys. The keys on which we see: alphabets A Z are called alphabet keys. numbers 0 9 are called number keys. keys with words like Enter, Backspace are called special keys. While typing: To leave some space use the Space bar. This is usually the longest key on the bottom row and has nothing written on it. To erase use the Backspace key. This is usually the last key in the numbers row. To move to the next line use the Enter key. This is found at the end of the middle row of alphabets. Mouse A mouse is used to select an item shown on the monitor. The mouse has two or three buttons and a small wheel between the buttons. To select an item, we first point to the item and then click the left button. To start an activity, we double click the left button. To control an activity, we click the right button. To move up and down a page, we use the, wheel or scroll button. 3
Tejas: We have finished. Now can I paint using the computer? Jyoti: I want to listen to music. Moz: Ok. Go ahead. You know how to start an activity. Revision of Painting Tejas double clicks on the paint icon. The paint activity window opens. Tejas first opens an existing file and plays with the colours. Then he creates his own painting. He knows that: The tools for drawing can be found under Tools. A set of tools is called a Toolbar. The various choices in any Toolbar are called the Options. The tools and options that Tejas uses to draw a house are: New option to get a blank canvas. Shapes toolbar to get shapes like square, rectangle, triangle. Brushes toolbar to colour using the colour palette. Eraser to erase. Save option to save the painting. Print option to print the painting. Quit option to quit the activity. 4
Revision of Music Player Jyoti double clicks on the music activity. She knows that she can control the music player by moving the mouse pointer over the control buttons. Jana Gana Mana.mp3 This is what she clicks: Open option to select the song that she likes. Play to play the song. Pause to stop the song and practice that line. Pressing Pause or Play again will continue the song from where it had stopped. Rewind and Forward to jump to a different part of the song. Mute to turn off the volume. Slider to change the volume. Stop to stop the song completely. The children spent a lot of time in the computer room as they had one free period. Tejas saves the painting and Jyoti sings the song that she has learnt. Moz: Very good. The song is melodious. The painting is very creative. Revision of Desktop, Window and its elements Desktop The small pictures that we see on the screen are called icons. The screen where all the icons are arranged is called a desktop. Icons of activities that we use often are kept on the desktop. The bar at the bottom of the desktop is called the taskbar. 5
Window To start an activity double click on the activity icon on the desktop. The activity window opens on the desktop. More than one activity can be started at a time. Whenever you click on a window, the computer brings it in front and allows you to use that activity. Close and Minimise of a window button at the top right corner of a window is used to close the activity. button at the top right corner of a window makes the window very small. Taskbar The bar at the bottom of the desktop is called the taskbar. When you open any activity, a small window of that activity appears on the taskbar. The taskbar has one button for each window on the desktop. All the activities that have been started can be seen in the taskbar. Clicking an activity button on the taskbar will open the activity window again. 6
Title bar The top bar of a window is called the Title bar. You can recognize the activity in a window by the title in the title bar. Wallpaper The picture on the desktop is called the Wallpaper. A right click on the desktop brings up a dialog box. One of the options allows you to change the wallpaper. Additional Parts of a Computer Sounds produced by the computer or songs played on it are heard through the Speakers. A Printer helps you to print what you see on monitor. Tejas: Sometimes when we click on print, the computer does not print. Is it because the printer is not connected? Moz: We will explore this tomorrow. Chin Chinaki... LESSON OUTCOME After you have studied this lesson, you will be able to: Recall what was learnt in level I and start new topics. 7
Book II Lesson 1 WORKSHEETS 1. List the places where you have seen computers being used. What purpose were they used for? 2. List what you should do for using computers safely and carefully. 3. Kichu the squirrel is searching for the following words. Can you help him by circling the words? 1. Desktop 2. Icon 3. Wallpaper 4. Taskbar 5. Quit 6.Titlebar 7. Click 8. Open 9. New 10. Window 11. Save W G H K D E S K T O P I C O N E X Y O P V A N L W E X I T B H T S D O T W A L I M K A B O S Y Q U I T O S S C W R B U B A L L O K V D E S K W Q E Y E B Q Y I O G D T B U S A O U W A L L P A P E R P P Q Z A F B R S A V E C L I C K N M W R J N 8
Book II Lesson 1 WORKSHEETS 4. Martha monkey loves bananas. But the banana tree is on the island across the river. Help her reach the tree. She can step only on those stones having the names of items related to a computer. Blackbaord Save Space bar Rope Keyboard Monitor Sow ICU Mouse CPU Printer 9
Book II Lesson 1 WORKSHEETS 5. Can you help Tejas to match the computer parts with their names: 1. B R D 2. E 3. M I R 4. S A R 5. P I T 6. P 10
Book II Lesson 1 WORKSHEETS 6. Match the computer parts: SPEAKERS PRINTER WEBCAM CD 7. Name the following parts: 11
Book II Lesson 1 1. Use the keyboard to play the following game: Open Gcompris and go to calculation activities under maths games. a) Use the mouse to click on the numbers to join the dots and complete the picture. b) Use the arrow keys to move to the different numbers. Press the space bar to eat the number. 2. Open TuxPaint. Draw a kite and save the file. List the tool options that you used. 3. Minimize the paint application, and play a music file. Note what you see on the taskbar. 4. Change the wallpaper of your desktop by using different pictures and styles. Group Activity: Act out being a Computer: Play a game where students act out as different parts of a computer. A small group acts as users of the computer, making the different parts do various activities. They tell the student who acts as the Keyboard/Mouse to do an activity or solve a problem [e.g. a math problem, a drawing to be made]. Another student acts as CPU and solves the problem. The CPU tells the answer to the student who is acting as the Monitor, who then shows the answer. Some students could also act as the wires that connect the Keyboard to the CPU and the CPU to the Monitor. You may include a couple of students as Speakers who will sing for the class! You can take turns being different parts of a computer. Explore! 1. How will you write your name in CAPITAL letters? 2. How will you share the computer to draw a picture? 12
Teacher s Book II Corner Lesson 1 The first lesson of class II is a revision chapter. It is important that students completely learn the class I contents before they start new topics. Ensure that you give adequate time to hands-on practice of what they have already learnt. Ask the students about places where they have seen computers being used. You can discuss about the places that they visited in their holidays. You can bring the class I textbook to the class. Ask the students about the various activities that they did with computers. They will mention playing games, colouring etc. Ask them which computer parts are used to do these activities. Summarize the discussion by briefly mentioning the function of each part. While they are looking at the desktop, revise about taskbar, icons and wallpaper (Do not forget to create short cuts to start game/paint applications and store different wall papers). Revise what icons are. Explain that when you double click on an icon, you can start an activity. Ask students what they use for drawing using the computer. Let them point to the correct icon. Revise the tool box and allow them to do the different activities listed above. Revise the dos and donts that they have learnt. Tell them that they will now learn exercises to remain healthy while using computers this year. Further Reading : http://www.kidsdomain.com/brain/computer/lesson/comp_les1.html http://www.learnenglish.org.uk/words/activities/kzcompdr.html http://www.tuxpaint.org/ 13